Cazzy, I'm so sorry you are all in this situation. I have lived through it too, with my DD. She was a little older than yours, though - 13 - and 2 years later is much happier and healthier, having undergone hours and hours of CBT. She is still on a large dose of Fluoxetine and I do sometimes worry that this is masking the anxiety which caused the OCD, but I guess we'll only know when the dose is reduced over the next couple of years. Hopefully by then she will have the maturity and coping mechanisms necessary to help herself.
I remember in one of her early sessions, the psychologist asked her if she wanted to get better, and the answer was yes. However, later on, as they tried to deal with each of her compulsive behaviours, she was very reluctant to let them all go. She let most of them go, but hung on to one, which they "allowed" her, though she eventually lost that one too, quite naturally.
It sounds as though your DD doesn't want to get better, and I'm not qualified to know why. But perhaps it is something to do with it making her feel different or special? Do you have any idea why she is anxious? In our case, the anxiety was caused by DD having some minor SEN, but combined they caused her serious anxiety, which she tried to control with the OCD.
I wish I could help you. DD's problems almost broke our family and I ended up giving up work as I no longer able felt I could look after her and do my job properly. However, rest assured, that when you get the right help, you will very quickly see a difference, particularly if you can get her to take the Fluoexitine. Once the anxiety has reduced, the OCD can be dealt with.
I wish you all the luck in the World and hope that you see light at the end of the tunnel soon.